Why Can\'t I Connect to My MySQL Database in Sequel Pro?

Sequel Pro and MySQL Connection Failure: Troubleshooting and Fixes

The "Unable to connect to host" error typically arises when Sequel Pro struggles to establish a connection with a MySQL database. This error can be particularly frustrating for users who have successfully established connections via the terminal.

Authentication Plugin Issue

A common cause of this error is the use of the 'caching_sha2_password' authentication plugin by MySQL. Sequel Pro may not be compatible with this plugin at this time.

Homebrew and my.cnf Configuration

If you installed MySQL via Homebrew, you may need to modify the my.cnf file, which is usually located in /etc/my.cnf on Unix/Linux systems. In the [mysqld] section of the file, add the following line:

default-authentication-plugin=mysql_native_password

MySQL Terminal Login and Password Update

Next, log into the MySQL server from the terminal using the command 'mysql -u root -p'. Inside the shell, execute the following command, replacing [password] with your actual password:

ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '[password]';

Restart MySQL and Reconnect

Exit from the MySQL shell and restart MySQL using the command 'brew services restart mysql'. Attempt to connect to the database from Sequel Pro again.

Quick Fix (Destructive Method)

If the above steps do not resolve the issue, consider the following quick fix, but note that it is destructive and may result in data loss:

• Go to Apple Logo > System Preferences > MySQL > Initialize Database.
• Enter a new password and select 'Use legacy password'.
• Restart MySQL using 'brew services restart mysql'.

Alternatives to Sequel Pro

It's important to note that Sequel Pro has not been updated in recent years and may have some unresolved issues. Consider exploring alternative database management tools such as SequelAce, which retains similar functionality and appearance but may be more up-to-date and reliable.

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